Interaction of hydrogen atoms with pyrolytic graphite:possibility of hydrogen intercalation

摘要

Atomic hydrogen interaction with well-ordered pyrolytic graphite surface was studied at near room temperature byrnmeans of thermal programmed desorption and atomic force and scanning tunneling microscopy. AFM and STMrnpictures of initially flat surfaces displayed bubbled structures after hydrogen sorption. After hydrogen release thernbubbles disappeared and small etch-pits were observed in the first graphene layer. To gain an additional informationrnabout the features of the bubbled surfaces, AFM and STM tips were also used as tools for destruction of the bubbles.